Simulating of the measurement-device independent quantum key distribution with phase randomized general sources

Self Cite

By employing pulses involving three-intensity, we propose a scheme for the measurement device-independent quantum key distribution with heralded singlephoton sources. We make a comparative study of this scheme with the standard threeintensity decoy-state scheme using weak coherent sources or heralded single-photon sources. The advantage of this scheme is illustrated through numerical simulations: It can approach very closely the asymptotic case of using an infinite number of decoystates and exhibits excellent behavior in both the secure transmission distance and the final key generation rate.

Section: Numerical Simulationsmentioning

confidence: 99%

An enhanced proposal on decoy-state measurement device-independent quantum key distribution

Wang

Zhang

Luo

et al. 2016

Self Cite

“…The gains and error rates, which can be observed in the experiment, could be estimated with linear model channels. According to the linear model in [24], the state |n n| from Alice can be changed into n k=0 C k n η k (1 − η) n−k |k k|, when it arrives to the UTP. Here C k n is the binomial coefficient, defined as C k n =:…”

Section: Numerical Simulation For Mdi-qkdmentioning

confidence: 99%

“…For example, some apply different number of decoy states [19,20], and others employ either weak coherent states (WCS) [20][21][22] or heralded single-photon sources (HSPS) [23][24][25]. However, for those schemes applying decoy states with one, two or three intensities, the performance is poorer than the asymptotic case of using infinite number of decoy states.…”

Section: Introductionmentioning

confidence: 99%

The enhanced measurement-device-independent quantum key distribution with two-intensity decoy states

Zhu

Zhou

et al. 2016

Self Cite

We put forward a new scheme for implementing the measurement-deviceindependent quantum key distribution (QKD) with weak coherent source, while using only two different intensities. In the new scheme, we insert a beam splitter and a local detector at both Alice's and Bob's side, and then all the triggering and nontriggering signals could be employed to process parameter estimations, resulting in very precise estimations for the two-single-photon contributions. Besides, we compare its behavior with two other often used methods, i.e., the conventional standard three-intensity decoy-state measurement-device-independent QKD and the passive measurement-device-independent QKD. Through numerical simulations, we demonstrate that our new approach can exhibit outstanding characteristics not only in the secure transmission distance, but also in the final key generation rate.

“…The studies on the decoy-state MDI-QKD method with source errors were also presented in refs. [24,25]. However, up to now, there has been no report on the decoy-state RRDPS-QKD method with source errors yet.…”

Section: Introductionmentioning

confidence: 99%

Decoy-state round-robin differential-phase-shift quantum key distribution with source errors

Mao

Wang

Zhao

2019

As a promising quantum key distribution (QKD), most of the existing round-robin differential-phase-shift quantum key distribution (RRDPS-QKD) protocols have adopted the decoy-state method and have assumed the source states are exactly controlled. However, the precise manipulation of source states is impossible for any practical experiment, and the RRDPS-QKD with source errors has an unignorable impact on the performance of the protocol. In the paper, we study the three-intensity decoy-state RRDPS-QKD protocol with source errors, formulate the secure generation key rate of the proposed protocol, do the numerical simulations to testify the deductions. The results show that our evaluation can estimate the influence of source errors. 2 Qian-Ping Mao et al.